very good point, that is one of the things i am not satisfied with on my current build. i have a waterfall feature and a dripwall type feature and i like the way the drip wall came out 10x better because it just looks more natural. if i was to start over again i would deff want to make a more slow flowing natural "out of the background" type water feature. i am hoping that i will like it more once i get this thing planted and it grows in alittle more. my build as of now is here,
http://www.dendroboard.com/forum/parts-construction/71417-exoterra-xl-x-tall-36x18x36-build-log.html , i have gotten alot more done but i am waiting till i finish peat mossing the background and till i can use my girls camera to take the pictures. but youll see what i mean about how the waterfall in the left doesnt look natural, it looks alot better now that i have worked on it but you will see that when an update comes.